feat(ocr): discard abandoned capture batches

A bad scan, the wrong PDFs or a duplicate upload used to leave a batch
sitting in READY_FOR_REVIEW forever, because the only exits were confirm
(posts to the books) or rejecting every page one at a time. Add a
DISCARDED terminal status to both OCR domains and a single endpoint per
domain that rejects every page still pending in one shot.

Discarding is refused once anything has landed: statements once a page is
POSTED, policies once a page is APPLIED. Those batches did real work and
have to be settled page by page.

- POST /statements/batches/:id/discard
- POST /policy-ocr/batches/:id/discard
- shared DiscardBatchCard on both review screens, gated the same way

apps/web/src/lib/api.ts

@@ -27,6 +27,7 @@ import type {
   CreateBankInput,
   CreateBankMovementInput,
   CreateMovementInput,
+  DiscardBatchResult,
   UpdateBankAccountInput,
   ResolveOutstandingInput,
   ReviewDocumentInput,
@@ -1079,6 +1080,11 @@ export function confirmStatementBatch(
   });
 }
 
+/** Abandon a batch pending review; rejects every page that is not posted. */
+export function discardStatementBatch(batchId: string): Promise<DiscardBatchResult> {
+  return apiFetch(`/statements/batches/${batchId}/discard`, { method: "POST" });
+}
+
 /** The rendered page image. A plain <img src> — the cookie rides along. */
 export function statementPageUrl(documentId: string): string {
   return `${API_ORIGIN}/statements/documents/${documentId}/page`;
@@ -1168,6 +1174,11 @@ export function confirmPolicyOcrBatch(
   });
 }
 
+/** Abandon a batch pending review; rejects every page that is not applied. */
+export function discardPolicyOcrBatch(batchId: string): Promise<DiscardBatchResult> {
+  return apiFetch(`/policy-ocr/batches/${batchId}/discard`, { method: "POST" });
+}
+
 /**
  * URL for the source PDF of a parsed policy document. The endpoint returns
  * the original upload (one PDF = one parsed policy), not a rendered page

apps/web/src/lib/types.ts

@@ -1217,7 +1217,9 @@ export type StatementBatchStatus =
   | "PROCESSING"
   | "READY_FOR_REVIEW"
   | "COMPLETED"
-  | "FAILED";
+  | "FAILED"
+  /** Abandoned by staff before anything was posted. */
+  | "DISCARDED";
 
 export type StatementDocumentStatus =
   | "PENDING_OCR"
@@ -1296,6 +1298,12 @@ export interface ConfirmBatchResult {
   checkNumber: string;
 }
 
+/** Shared by both OCR domains: how many pages the discard rejected. */
+export interface DiscardBatchResult {
+  batchId: string;
+  rejected: number;
+}
+
 /* ------------------------------------------ Policy OCR intake (GMX) */
 
 export type PolicyOcrBatchStatus =
@@ -1303,7 +1311,9 @@ export type PolicyOcrBatchStatus =
   | "PROCESSING"
   | "READY_FOR_REVIEW"
   | "COMPLETED"
-  | "FAILED";
+  | "FAILED"
+  /** Abandoned by staff before anything was applied. */
+  | "DISCARDED";
 
 export type PolicyOcrDocumentStatus =
   | "PENDING_OCR"